Narrative:

Right after liftoff from runway 27L encountered a large flock of very large birds and impacted several birds. Felt a vibration after bird impact. Left engine vibration showed fan vibes at 5.0. No yaw or loss of thrust. Climbed to 3000 ft, reduced left engine to idle. Declared emergency, landed with left engine at idle using engine out speeds/confign. On shutdown found numerous bent blades in left engine fan section. Damage also found to engine acoustical lining. Airport authority/authorized found engine acoustical material and remains of several turkey vultures on runway 27L.

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Original NASA ASRS Text

Title: A B767-300 RIGHT AFTER LIFTOFF AT 500 FT DECLARED AN EMER AND DIVERTED DUE TO VIBRATION IN #1 ENG CAUSED BY LARGE BIRD STRIKES.

Narrative: RIGHT AFTER LIFTOFF FROM RWY 27L ENCOUNTERED A LARGE FLOCK OF VERY LARGE BIRDS AND IMPACTED SEVERAL BIRDS. FELT A VIBRATION AFTER BIRD IMPACT. L ENG VIBRATION SHOWED FAN VIBES AT 5.0. NO YAW OR LOSS OF THRUST. CLBED TO 3000 FT, REDUCED L ENG TO IDLE. DECLARED EMER, LANDED WITH L ENG AT IDLE USING ENG OUT SPDS/CONFIGN. ON SHUTDOWN FOUND NUMEROUS BENT BLADES IN L ENG FAN SECTION. DAMAGE ALSO FOUND TO ENG ACOUSTICAL LINING. ARPT AUTH FOUND ENG ACOUSTICAL MATERIAL AND REMAINS OF SEVERAL TURKEY VULTURES ON RWY 27L.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.